advice on tubs

Hello to all! I hope everyone is having a good day! I was wondering if someone could give me a hand here with tubs. I'm preparing for the arrival of a male colombian boa.

What tub would you recommend for a young male? Thanks! :snake:

http://www.reptiletubs.com/

How big? For anything up to about 4', a cb-70 does well. Much over 4', I would go bigger.

between 2-3' range. What size flexwatt would you recommend for that size tub?

3" flexwatt is what we use.